Hatsan blitz

I have not gone downstairs to look. Can you add on to the bolt to allow a better purchase on it? Been thinkin on doing that to my Crosman 2028 it's hard to cock at high power. The bolt of the Crosman would allow screwing on a bigger "handle" did not look at how Hatsan makes the bolt on the Blitz.
I'm not sure but I think it screws in..I can probably easily machine a longer or bigger one..
Mark